EP1580402A1 - Turbomachine comprenant deux sous-ensembles assemblés sous contraint axiale - Google Patents
Turbomachine comprenant deux sous-ensembles assemblés sous contraint axiale Download PDFInfo
- Publication number
- EP1580402A1 EP1580402A1 EP05290663A EP05290663A EP1580402A1 EP 1580402 A1 EP1580402 A1 EP 1580402A1 EP 05290663 A EP05290663 A EP 05290663A EP 05290663 A EP05290663 A EP 05290663A EP 1580402 A1 EP1580402 A1 EP 1580402A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- annular
- turbomachine
- subassemblies
- turbomachine according
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 125000006850 spacer group Chemical group 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 abstract 2
- 230000000712 assembly Effects 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/005—Sealing means between non relatively rotating elements
Definitions
- the invention generally relates to a turbomachine, including a turbocharger charged with supplying combustion air, under pressure, to the combustion chamber of a jet engine. She more particularly a reinforcing enhancement sealing the junction between two subassemblies of such a machine, for example the junction under stress between a housing and a support fixed vanes of the stator.
- the stator is assembled to an outer casing.
- two subassemblies, of the housing and the stator are shaped to define between them an annular chamber in which is inserted a seal. This one takes support between two annular walls vis-a-vis belonging respectively to both subsets.
- the two annular parts in contact of the two subsets are applied against each other with axial stress.
- the constraint can be expressed in millimeters, this value designating the axial interference that would exist between the two subsets, if they were not in abeyance under duress. So far, relatively low constraints have been implemented, typically of the order of 0.3 mm. More recently, this constraint mounting was increased to 0.75 mm.
- the chamber enclosing the seal may open under the effect of original deformations thermal. Moreover, in operation the seal undergoes deformations and wear and tear that can go as far as the loss of fragments that driven by the pressure difference, are caught between the facing the annular chamber. These faces are damaged and air leaks increase.
- the object of the invention is to prevent the opening of the chamber avoid release of seal pieces and surface degradation against which he rests.
- the invention relates to a turbomachine comprising at least two subassemblies assembled to one another and defining between them an annular chamber housing a joint sealing, characterized in that two annular parts in contact respectively belonging to the two subassemblies and defining room are urged towards each other, in a manner known per se, with axial constraint and in that an annular spacer is inserted between their abutting surfaces.
- the constraint axial can be significantly increased. In particular, it can be between 1.5 and 3 mm.
- a constraint value currently preferred is close to 2.25 mm.
- This strong constraint to assembly allows to absorb variations of thermal origin and avoids the opening of the chamber and the destruction of the joint. This piece is little expensive and easy to change if it is damaged. Therefore, two subassemblies are protected and are not likely to be damaged.
- the arrangement is such that the contact area between the two abutment subassemblies are increased. This results in a decrease in the pressure of matting and better behavior vis-à-vis relative displacements between the subsets.
- the invention applies particularly to the connection between an outer casing and an element of stator carrying the blades of a turbocharger.
- FIG. 1 and 2 there is shown a portion of a turbocharger 11 entering the constitution of an aircraft engine reactor.
- Two subassemblies 14,16 are assembled under axial stress by defining between them an annular chamber 18 inside which is inserted a 20.
- the subassembly 14 constitutes an outer casing while the subassembly 16 constitutes the support of a plurality of vanes 22 of the turbocharger.
- the unrepresented blades are between the vanes fixed.
- the support of fixed blades consists of several segments 26 assembled end to end, each segment carrying a series of fixed vanes. The entire support is fixed to an inner casing 27.
- This inner casing this extends radially outward by three rings, a first ring 30 is fixed by a bolt assembly 31 to a first inner frame 32 of the housing outside, a second ring 34 comes to bear without constraint against a second frame 36 of the outer housing extending inwardly.
- the third ring 37 is fixed by a set of bolts 38 to a inner chord 39 of the outer casing 14.
- the second ring 34 has a flat annular surface 40 extending radially inward, extended by an axial cylindrical portion 42 supported by its circular field 43 against said second frame 36. More particularly, it comprises another surface annular flat 45 facing the crown, surmounted by a approximately tubular protuberance 46 covering with play an outer cylindrical portion of the second ring.
- This arrangement therefore defines the annular chamber 18 inside which is installed the seal 20 which bears between the two flat surfaces 40, 45.
- the sizing of the subassemblies 14, 16 is such that the assembly is carried out with a constraint caused by the This constraint is thus exerted between the field circular 43 of the second ring and the inner end of the surface plate 45 of the second chord.
- the arrangement described so far is classic. However, the mounting stress was relatively low, of the order of 0.3 mm. In some cases, the constraint has been 0.75 mm without being able to completely solve the problem of leaks and the destruction of the joint, as explained above.
- the invention appears in FIG. 3 and proposes to dispose of a annular spacer piece 50 between the abutting surfaces of the two subsets, that is to say here between the circular field 43 of the crown 34 and the circular end of the flat surface 45 of the chord 36.
- This piece 50 makes it possible to increase the stress of mounting which can now be between 1.5 mm and 3 mm, typically around 2.25 mm.
- the room tab 50 is shaped to increase the contact area to the end of at least one of the annular parts, here more particularly the flat surface 45 of said second chord 36.
- the axial cylindrical portion 42 of the crown makes it possible to guide the positioning of the insert 50 because it comprises a cylindrical surface 52 fitting on said cylindrical portion 42.
- the radial portion 54 of the intermediate piece bears against the surface plate 45 of said second chord.
- the radial section of the intermediate piece 50 has therefore the shape of an L.
- the insert can undergo a treatment of surface, before mounting, reinforcing its resistance. Treatment can particularly concerning the radial portion 54. It is therefore not necessary apply such treatment to the crown or chord.
- insert 50a is extended by a deflector portion 56, to inside.
- this part has a substantially conical shape.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasket Seals (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Supercharger (AREA)
Abstract
Description
- la figure 1 est une vue schématique illustrant deux sous-ensembles assemblés et constituant une partie d'un turbocompresseur, l'assemblage étant classique, avec contrainte axiale au voisinage d'une chambre de joint ;
- la figure 2 est une vue schématique à plus grande échelle de l'encadré 2 de la figure 1 ;
- la figure 3 est une vue analogue à la figure 2 illustrant le perfectionnement conforme à l'invention ; et
- la figure 4 est une vue analogue à la figure 3 illustrant une variante.
Claims (7)
- Turbomachine comprenant au moins deux sous-ensembles assemblés l'un à l'autre et définissant entre eux une chambre annulaire (18) abritant un joint d'étanchéité, caractérisée en ce que deux parties annulaires en contact appartenant respectivement aux deux sous-ensembles et définissant ladite chambre sont sollicitées l'une vers l'autre, de façon connue en soi, avec contrainte axiale et en ce qu'une pièce intercalaire annulaire (50) est insérée entre leurs surfaces en aboutement.
- Turbomachine selon la revendication 1, caractérisée en ce que ladite contrainte axiale entre les deux parties annulaires précitées est comprise entre 1,5 et 3 mm, de préférence voisine de 2,25 mm.
- Turbomachine selon la revendication 1 ou 2, caractérisée en ce que ladite pièce intercalaire (50) est conformée pour augmenter la surface de contact à l'extrémité d'au moins l'une des parties annulaires.
- Turbomachine selon l'une des revendications précédentes, caractérisée en ce que l'une des parties annulaires comporte une portion cylindrique (42) et en ce que ladite pièce intercalaire comporte une surface cylindrique (52) s'ajustant sur ladite portion cylindrique et une portion radiale (54) prenant appui contre une surface plate (45) de l'autre partie annulaire.
- Turbomachine selon la revendication 4, caractérisée en ce que la section radiale de ladite pièce intercalaire (50) est en forme de L.
- Turbomachine selon l'une des revendications précédentes, caractérisée en ce que ladite pièce intercalaire se prolonge par une partie formant déflecteur (56).
- Turbomachine selon l'une des revendications précédentes, caractérisée en ce que les deux sous-ensembles constituent respectivement un carter et un élément de stator.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0403128 | 2004-03-26 | ||
FR0403128A FR2868125B1 (fr) | 2004-03-26 | 2004-03-26 | Turbomachine comprenant deux sous-ensembles assembles sous contrainte axiale |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1580402A1 true EP1580402A1 (fr) | 2005-09-28 |
EP1580402B1 EP1580402B1 (fr) | 2007-07-18 |
Family
ID=34855166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05290663A Active EP1580402B1 (fr) | 2004-03-26 | 2005-03-25 | Turbomachine comprenant deux sous-ensembles assemblés sous contraint axiale |
Country Status (9)
Country | Link |
---|---|
US (1) | US7571614B2 (fr) |
EP (1) | EP1580402B1 (fr) |
JP (1) | JP4643326B2 (fr) |
CA (1) | CA2500947C (fr) |
DE (1) | DE602005001641T2 (fr) |
ES (1) | ES2290863T3 (fr) |
FR (1) | FR2868125B1 (fr) |
RU (1) | RU2380546C2 (fr) |
UA (1) | UA86354C2 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2898641B1 (fr) * | 2006-03-17 | 2008-05-02 | Snecma Sa | Habillage de carter dans un turboreacteur |
US8393855B2 (en) * | 2007-06-29 | 2013-03-12 | General Electric Company | Flange with axially curved impingement surface for gas turbine engine clearance control |
US8197186B2 (en) * | 2007-06-29 | 2012-06-12 | General Electric Company | Flange with axially extending holes for gas turbine engine clearance control |
US8998573B2 (en) * | 2010-10-29 | 2015-04-07 | General Electric Company | Resilient mounting apparatus for low-ductility turbine shroud |
EP2886802B1 (fr) * | 2013-12-20 | 2019-04-10 | Safran Aero Boosters SA | Joint de virole interne de dernier étage de compresseur de turbomachine axiale |
US10202863B2 (en) * | 2016-05-23 | 2019-02-12 | United Technologies Corporation | Seal ring for gas turbine engines |
US10392967B2 (en) | 2017-11-13 | 2019-08-27 | General Electric Company | Compliant seal component and associated method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0236567A1 (fr) * | 1985-12-12 | 1987-09-16 | Communaute Europeenne De L'energie Atomique (Euratom) | Système d'étanchéité entre deux brides métalliques |
FR2646221A1 (fr) * | 1989-04-19 | 1990-10-26 | Snecma | Joint d'etancheite, dispositif le comportant et application a une turbomachine |
US5320484A (en) * | 1992-08-26 | 1994-06-14 | General Electric Company | Turbomachine stator having a double skin casing including means for preventing gas flow longitudinally therethrough |
JPH11343809A (ja) * | 1998-06-02 | 1999-12-14 | Ishikawajima Harima Heavy Ind Co Ltd | ガスタービンのタービンシュラウド部のシール構造 |
WO2003054358A1 (fr) * | 2001-12-11 | 2003-07-03 | Alstom Technology Ltd | Ensemble de turbine a gaz |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH076407B2 (ja) * | 1992-08-26 | 1995-01-30 | ゼネラル・エレクトリック・カンパニイ | ターボシャフトエンジン |
FR2766517B1 (fr) * | 1997-07-24 | 1999-09-03 | Snecma | Dispositif de ventilation d'un anneau de turbomachine |
US6402466B1 (en) * | 2000-05-16 | 2002-06-11 | General Electric Company | Leaf seal for gas turbine stator shrouds and a nozzle band |
US6450762B1 (en) * | 2001-01-31 | 2002-09-17 | General Electric Company | Integral aft seal for turbine applications |
US6612809B2 (en) * | 2001-11-28 | 2003-09-02 | General Electric Company | Thermally compliant discourager seal |
US6568903B1 (en) * | 2001-12-28 | 2003-05-27 | General Electric Company | Supplemental seal for the chordal hinge seals in a gas turbine |
-
2004
- 2004-03-26 FR FR0403128A patent/FR2868125B1/fr not_active Expired - Fee Related
-
2005
- 2005-03-23 CA CA2500947A patent/CA2500947C/fr active Active
- 2005-03-23 US US11/086,359 patent/US7571614B2/en active Active
- 2005-03-24 JP JP2005085761A patent/JP4643326B2/ja active Active
- 2005-03-25 RU RU2005108494/06A patent/RU2380546C2/ru active
- 2005-03-25 ES ES05290663T patent/ES2290863T3/es active Active
- 2005-03-25 UA UAA200502763A patent/UA86354C2/ru unknown
- 2005-03-25 EP EP05290663A patent/EP1580402B1/fr active Active
- 2005-03-25 DE DE602005001641T patent/DE602005001641T2/de active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0236567A1 (fr) * | 1985-12-12 | 1987-09-16 | Communaute Europeenne De L'energie Atomique (Euratom) | Système d'étanchéité entre deux brides métalliques |
FR2646221A1 (fr) * | 1989-04-19 | 1990-10-26 | Snecma | Joint d'etancheite, dispositif le comportant et application a une turbomachine |
US5320484A (en) * | 1992-08-26 | 1994-06-14 | General Electric Company | Turbomachine stator having a double skin casing including means for preventing gas flow longitudinally therethrough |
JPH11343809A (ja) * | 1998-06-02 | 1999-12-14 | Ishikawajima Harima Heavy Ind Co Ltd | ガスタービンのタービンシュラウド部のシール構造 |
WO2003054358A1 (fr) * | 2001-12-11 | 2003-07-03 | Alstom Technology Ltd | Ensemble de turbine a gaz |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 03 30 March 2000 (2000-03-30) * |
Also Published As
Publication number | Publication date |
---|---|
JP4643326B2 (ja) | 2011-03-02 |
DE602005001641D1 (de) | 2007-08-30 |
RU2380546C2 (ru) | 2010-01-27 |
FR2868125B1 (fr) | 2006-07-21 |
UA86354C2 (ru) | 2009-04-27 |
FR2868125A1 (fr) | 2005-09-30 |
DE602005001641T2 (de) | 2008-06-05 |
ES2290863T3 (es) | 2008-02-16 |
RU2005108494A (ru) | 2006-09-27 |
CA2500947C (fr) | 2012-11-20 |
CA2500947A1 (fr) | 2005-09-26 |
US7571614B2 (en) | 2009-08-11 |
JP2005291203A (ja) | 2005-10-20 |
US20050260066A1 (en) | 2005-11-24 |
EP1580402B1 (fr) | 2007-07-18 |
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